Originally Posted by offroute
...Even then I would sometimes have to wait 10 minutes or so for the thing to work (I guess as a satellite came into view.) SPOT has many advantages over the sat phone - and my guess is it would work much better there than the phones do....
Perhaps the reason for the Ok Check transmissions at 10 minute intervals. And I understand that Globalstar is pushing data services (e.g., SPOT) over voice until their next generation of satellites is in place.